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Finding the Fourth Proportional to 68,745.74, 94,860.68 and 41,878.50

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Solution

The fourth proportional to 68,745.74, 94,860.68 and 41,878.50 is: 57,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,745.74 : 94,860.68 = 41,878.50 : x
  2. Step 2: Convert to fraction form
    68,745.74/94,860.68 = 41,878.50/x
  3. Step 3: Cross multiply
    68,745.74x = 94,860.68 × 41,878.50
  4. Step 4: Simplify right side
    68,745.74x = 3,972,622,987.38
  5. Step 5: Solve for x
    x = 3,972,622,987.38/68,745.74
  6. Step 6: Final answer
    x = 57,787.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.